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deadliest

ADJECTIVE

causing end of life

Synonyms

STRONGEST

bloody carcinogenic cruel dangerous destructive fatal harmful lethal malignant mortal murderous noxious pernicious poisonous savage suicidal toxic violent virulent

WEAK

baleful baneful bloodthirsty cannibalistic death-dealing deathly deleterious destroying grim homicidal injurious internecine killing mortiferous pestiferous pestilent pestilential ruthless slaying unrelenting venomous

Antonyms

STRONGEST

benign calm gentle harmless healthy helpful kind life-giving nice nonpoisonous wholesome

WEAK

animating energizing healthful invigorating lively

ADJECTIVE

ghostly

Synonyms

STRONGEST

ghastly

WEAK

ashen corpselike dead deadened deathful deathlike deathly pallid wan white

Antonyms

WEAK

animating energizing harmless healthful healthy invigorating lively wholesome

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It also helps cancer cells survive by repairing damaged DNA, a finding that could eventually improve treatments for some of the deadliest cancers.

From Science Daily • May 17, 2026

Liu's indictment comes in the wake of widely reported findings from a United States investigation into the crash, which was China's deadliest air disaster in decades.

From Barron's • May 8, 2026

That marvelous lighted scene, foretelling the end of Europe’s deadliest period, has stayed with me all these years.

From The Wall Street Journal • May 7, 2026

Victor Lemus, Joshua Kelley-Eklund and William Osborn and marking the department’s deadliest incident in more than 150 years.

From Los Angeles Times • May 5, 2026

"But unicorns are the deadliest, fiercest, and most bloodthirsty of all creatures, both mundane and supernatural. Their kill ratio is six times higher than a dragon's."

From "City of the Plague God" by Sarwat Chadda